Conforming to：：GB/T5293 F4A0-H08A F5A0-H08MnA
Equivalent to： AWS-A5.17 F6A0-EL12 F7A0-EM12K
DIN BSC 198AC10SKM
DESCRIPTION AND APPLICATIONS
Versatile flux for welding of ordinary structural steel and boiler steel in combination with appropriate SAW wire(such as EM12,EM12K and EL8),which can obtain smooth weld bead with flat weld interfaces free from undercut. Steadily arc and easy slag removal, no phenomenon of slag-flow are other special features of LJ-SJ301. It can be applied to the Multi-pass weld and multi-wire weld, especially to weld pipelines in various diameters.
• Flux type: Silicon-Calcium
• Basicity index: 1.0
• Grain size:2.0-0.28mm(10-60meshes)
Compositions of fluxes (%)
SiO2+TiO2 CaO+MgO Al2O3+MnO CaF2 S P
25-35 15-25 30-40 5-15 ≤0.06 ≤0.08
Typical all weld metal mechanical property
Wire Yield Stress Tensile Strength Elongation AKV(J)
EL12 ≥330Mpa  415-550Mpa ≥24% ≥50/0℃
EM12K ≥400Mpa 480-650Mpa ≥24% ≥50/0℃
Remark
1. Before welding, fluxes should be baked for two hours at 300-350℃.
2. Removal of rust, oil, dirt, water, impurities, etc in welding-areas.